Hi everyone have owned a 1984 Aspencade for over two years and bought it from the original owner. Bike has 144000 miles on it and when I slow down sometimes the engine valve tappets make a clicking noise. Bike has been very well maintained and am curious if anybody has had the same issue and what can be done. thanks for any input.

... Howdy ... That Tappet Noise When Slowing Down Can Be Caused By Low Oil Pressure ... If That Model Has Hyd. Lifters ... Happy Trails ...

Would it help to use a thicker oil or thinner oil?